阅读说明：本技术 一种离心机用在线动平衡装置 (Online dynamic balance device for centrifugal machine ) 是由 陈兵 翟冰 于 2021-01-25 设计创作，主要内容包括：本发明公开了一种离心机用在线动平衡装置,其包括连接法兰、一级偏心块部装、外壳、二级偏心块部装、护罩、旋转连接件、旋转导电滑环、接线盒和入料管,其中连接法兰用于将在线动平衡装置与离心机通过螺栓固定,连接法兰带有精加工配合止口,通过精加工配合止口使连接法兰与离心机安装在一起。本发明离心机用在线动平衡装置实现了离心机在线动平衡,随时调整转子的动不平衡量,无需拆卸转子；离心机转子始装保持在较好的动平衡下运转,延长转子使用寿命。(The invention discloses an online dynamic balancing device for a centrifuge, which comprises a connecting flange, a first-stage eccentric block part, a shell, a second-stage eccentric block part, a shield, a rotary connecting piece, a rotary conductive sliding ring, a junction box and a feeding pipe, wherein the connecting flange is used for fixing the online dynamic balancing device and the centrifuge through bolts, the connecting flange is provided with a finish machining matching seam allowance, and the connecting flange and the centrifuge are installed together through the finish machining matching seam allowance. The online dynamic balance device for the centrifuge realizes online dynamic balance of the centrifuge, adjusts the dynamic unbalance amount of the rotor at any time, and does not need to disassemble the rotor; the centrifuge rotor is initially installed and kept to run under better dynamic balance, and the service life of the rotor is prolonged.)

1. The utility model provides a centrifugal machine is with online dynamic balance device which characterized in that: the device comprises a connecting flange (1), a first-stage eccentric block part (2), a shell (3), a second-stage eccentric block part (4), a shield (5), a rotary connecting piece (6), a rotary conductive sliding ring (7), a junction box (8) and a feeding pipe (9), wherein the connecting flange (1) is used for fixing an online dynamic balance device and a centrifugal machine through bolts, the connecting flange (1) is provided with a finish machining matching seam allowance, and the connecting flange (1) is installed together with the centrifugal machine through the finish machining matching seam allowance.

2. An on-line dynamic balancing device for a centrifuge according to claim 1, wherein: the first-stage eccentric block part assembly (2) and the second-stage eccentric block part assembly (4) are eccentric block parts, and the purpose of trimming is achieved by adjusting the mutual deflection angles of the first-stage eccentric block part assembly and the second-stage eccentric block part assembly.

3. An on-line dynamic balancing device for a centrifuge according to claim 2, wherein: the shape of the first-stage eccentric block part assembly (2) is divided into an outer ring and an inner sleeve, the outer ring of the first-stage eccentric block part assembly (2) is of a fan-shaped structure, and the outer ring and the inner sleeve of the first-stage eccentric block part assembly (2) realize relative rotation through gear transmission; the first-stage eccentric block part (2) is arranged at the mounting end of the online dynamic balance device, and an inner sleeve of the first-stage eccentric block part (2) is directly fixed with the shell of the online dynamic balance device.

4. An on-line dynamic balancing device for a centrifuge according to claim 3, wherein: the shape of the second-stage eccentric block part (4) is completely consistent with that of the first-stage eccentric block part (2), and the second-stage eccentric block part is directly connected with the eccentric block part (1) through a transmission shaft.

5. An on-line dynamic balancing device for a centrifuge according to claim 1, wherein: the shape of guard shield (5) is the hollow cylinder structure of area installation concave convex platform, and guard shield (5) is the transition of shell (3) and rotatory terminal box (8), and guard shield (5) are used for installing bearing and fixed shell (3).

6. An on-line dynamic balancing device for a centrifuge according to claim 5, wherein: the rotary connecting piece (6) is in a cylindrical hollow shell structure and is arranged in the mounting concave boss of the shield (5).

7. An on-line dynamic balancing device for a centrifuge according to claim 5, wherein: the shape of the rotary conductive slip ring (7) is a rotary conductive structure with multiple contacts, and the rotary conductive slip ring is arranged in the rotary connecting piece (6); the rotary conductive slip ring (7) leads out the cables of the first-stage eccentric block part (2) and the second-stage eccentric block part (4).

8. An on-line dynamic balancing device for a centrifuge according to claim 5, wherein: the junction box (8) is in the form of an aviation plug and is fixed on the rotary connecting piece (6).

9. An on-line dynamic balancing device for a centrifuge according to claim 5, wherein: the feeding pipe (9) is in a circular pipe structure with a smooth inner wall and is arranged inside the shell (3).

10. An on-line dynamic balancing device for a centrifuge according to claim 8, wherein: the shell (3) adopts an aluminum shell or a steel shell; or the junction box (8) is a rotary junction box (8).

Technical Field

The invention belongs to the technical field of centrifuges, and relates to an online dynamic balancing device for a centrifuge.

Background

Centrifuges are machines that utilize centrifugal force to separate components of a mixture of liquid and solid particles or liquid and liquid. The centrifuge is mainly used for separating solid particles from liquid in suspension, or separating two liquids which have different densities and are insoluble with each other in emulsion (for example, cream is separated from milk); it can also be used to remove liquids from wet solids, such as by spin drying clothes in a washing machine; the special overspeed tubular separator can also separate gas mixtures with different densities; some settling centrifuges can also grade solid particles according to density or granularity by utilizing the characteristic that solid particles with different densities or granularities have different settling speeds in liquid.

After the centrifuge rotor runs for a period of time, the dynamic unbalance amount is larger and larger due to the influence of material abrasion or other reasons, and further the amplitude of the centrifuge rotor is larger and larger, and the vibration intensity is stronger and stronger. When a certain vibration threshold is reached, the centrifuge rotor needs to be removed and the dynamic balancing needs to be performed again.

The maintenance mode causes that only the dynamic balance can be carried out regularly, and the production can be influenced during the dynamic balance; in addition, the disassembly and the assembly of the centrifuge rotor are time-consuming and labor-consuming, and when the centrifuge rotor is disassembled, part of sealing parts and bearing parts are often damaged, so that financial resources are wasted; more disadvantageously, the centrifuge is operated with an increasing amount of rotor dynamic unbalance, and the equipment is less and less effective.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an online dynamic balancing device for a centrifugal machine.

In order to achieve the purpose, the invention provides an online dynamic balance device for a centrifuge, which comprises a connecting flange, a primary eccentric block part, a shell, a secondary eccentric block part, a shield, a rotary connecting piece, a rotary conductive sliding ring, a junction box and a feeding pipe, wherein the connecting flange is used for fixing the online dynamic balance device and the centrifuge through bolts, the connecting flange is provided with a finish machining matching seam allowance, and the connecting flange and the centrifuge are installed together through the finish machining matching seam allowance.

Wherein, the first-stage eccentric block part and the second-stage eccentric block part are eccentric block parts, and the purpose of trimming is realized by adjusting the mutual deflection angle of the two parts. The shape of the first-stage eccentric block part is divided into an outer ring and an inner sleeve, the outer ring of the first-stage eccentric block part is of a fan-shaped structure, and the outer ring and the inner sleeve of the first-stage eccentric block part realize relative rotation through gear transmission; the first-stage eccentric block is installed at the installation end of the online dynamic balance device, and an inner sleeve installed on the first-stage eccentric block is directly fixed with the shell of the online dynamic balance device. The shape of the second-stage eccentric block part is completely consistent with that of the first-stage eccentric block part, and the second-stage eccentric block part is directly connected with the first-stage eccentric block part through a transmission shaft.

Furthermore, the shape of the protective cover is a hollow cylindrical structure with a mounting concave boss, the protective cover is a transition of the shell and the rotating junction box, and the protective cover is used for mounting a bearing and fixing the shell.

Preferably, the rotary connector is in the shape of a cylindrical hollow shell structure which is mounted in a mounting concave boss of the shield. The shape of the rotary conductive slip ring is a rotary conductive structure with multiple contacts, and the rotary conductive slip ring is arranged in the rotary connecting piece; the rotary conductive slip ring leads out the cables arranged on the first-stage eccentric block part and the second-stage eccentric block part.

Preferably, the junction box is in the form of an aircraft plug, fixed to the rotary connection. The shape of pan feeding pipe is the pipe structure, and the inner wall is smooth, and it is installed in the inside of shell.

More preferably, the shell is made of aluminum or steel; or the junction box is a rotating junction box.

Compared with the prior art, the online dynamic balancing device for the centrifugal machine can realize the following related functions.

1. The online dynamic balance of the centrifuge can be realized, the dynamic unbalance of the rotor can be adjusted at any time, and the rotor does not need to be disassembled.

2. The centrifuge rotor is initially installed and kept to run under better dynamic balance, and the service life of the rotor is prolonged.

Drawings

Fig. 1 is a sectional view of an on-line dynamic balancing apparatus for a centrifuge according to the present invention.

Fig. 2 is a left side view of an on-line dynamic balancing apparatus for a centrifuge according to the present invention.

Fig. 3 is a sectional view of an eccentric mass part in the wire dynamic balancing apparatus for a centrifugal machine.

Fig. 4 is a left side view of an eccentric mass portion in the dynamic balancing apparatus for a centrifugal machine.

Detailed Description

The invention is further elucidated with reference to the drawings and the examples of embodiment. In the following detailed description, certain exemplary embodiments of the present invention are described by way of illustration only. Needless to say, a person skilled in the art realizes that the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.

The invention discloses an online dynamic balancing device for a centrifuge, which comprises a connecting flange 1, a primary eccentric block part 2, a shell 3, a secondary eccentric block part 4, a shield 5, a rotary connecting piece 6, a rotary conductive sliding ring 7, a junction box 8 and a feeding pipe 9, wherein the connecting flange 1 is used for fixing the online dynamic balancing device and the centrifuge through bolts, the connecting flange 1 is provided with a finish machining matching spigot, and the connecting flange 1 and the centrifuge are installed together through the finish machining matching spigot, so that the coaxiality of equipment is ensured.

The first-stage eccentric block part assembly 2 and the second-stage eccentric block part assembly 4 are eccentric block parts, and the mutual deflection angle of the first-stage eccentric block part assembly and the second-stage eccentric block part assembly is adjusted, so that the purpose of trimming is achieved; the shape of the first-stage eccentric block part 2 is divided into an outer ring, an inner sleeve and the like. The outer ring of the first-stage eccentric block part 2 is of a fan-shaped structure and can rotate relative to the inner sleeve of the first-stage eccentric block part 2 through gear transmission; the first-stage eccentric block part 2 is arranged at the mounting end of the online dynamic balance device, and an inner sleeve of the first-stage eccentric block part 2 is directly fixed with a shell of the online dynamic balance device; the shape of the second-stage eccentric block part 4 is completely consistent with that of the first-stage eccentric block part 2, and the second-stage eccentric block part 4 is directly connected with the eccentric block part 1 through a transmission shaft.

The housing 3, preferably made of aluminum or steel, is used to protect the internal structure of the dynamic balancing device.

The shield 5 is in a hollow cylindrical structure with a mounting concave boss, and is a transition of the shell 3 and the rotating junction box 8 for mounting a bearing and fixing the shell 3.

The rotary connecting piece 6 is in a cylindrical hollow shell structure and is arranged in the mounting concave boss of the shield 5; the first-stage eccentric block part 2 and the second-stage eccentric block part 4, the shell 3 and the junction box 8 realize relative rotation.

A rotary conductive slip ring 7 in the shape of a multi-contact rotary conductive structure mounted within the rotary connector 6; and leading out the cables of the first-stage eccentric block part 2 and the second-stage eccentric block part 4.

The junction box 8 is in the form of an aviation plug and is fixed on the rotary connecting piece 6; the terminal block 8 is preferably a rotating terminal block 8.

The feeding pipe 9 is in a circular pipe structure, has a smooth inner wall and is arranged inside the shell 3; the feeding of the centrifugal machine is not affected after the installation of the centrifugal machine is guaranteed.

As shown in fig. 3 and fig. 4, the eccentric block assembly 2 of the first stage and the eccentric block assembly 4 of the second stage have the same structure, and the first stage eccentric block assembly 2 is taken as an example for explanation, wherein the first stage eccentric block assembly 2 comprises an eccentric block 11, a transmission shaft 12, an inner sleeve 13, a bearing 14, a driving device 15 and a balancing weight 16; the eccentric block 11 is in a half-sector structure and is connected with the inner sleeve 13 through a bearing 14, so that the eccentric block 11 and the inner sleeve 13 can rotate relatively, and the eccentric block is made of a steel structure. The first-stage eccentric block part assembly 2 and the second-stage eccentric block part assembly 4 are main components for realizing the balancing purpose of the dynamic balancing device.

The transmission shaft 12 is in a shaft structure of an input end turbine and an output end gear, is fixed in a bearing of the inner sleeve 13 and can rotate relative to the inner sleeve 13; the worm gear and the worm are matched with the driving part 5; the eccentric block assembly of the other stage is matched with the eccentric block assembly of the other stage through a gear; the transmission shaft 12 is used for driving power provided by the driving part and transmitting the power to the gear through the worm gear, so that the eccentric block 11 and the inner sleeve 13 rotate relatively.

The inner sleeve 13 is a hollow cylinder with a mounting hole of the transmission shaft 2 and a mounting hole of the driving part 5, and the outer wall of the inner sleeve is connected with the eccentric block 11 through a bearing; the inner wall of the inner sleeve 13 is directly fixed with the feeding pipe; aluminum structures or high strength non-metallic materials. The inner sleeve 13 is used for fixing the driving device and installing the transmission shaft.

And a bearing 14 which is arranged between the eccentric block 11 and the inner sleeve 13 and realizes the relative rotation of the eccentric block and the inner sleeve.

The driving device 15 is in a direct connection structure of a direct current motor and a worm, the driving device 15 is installed in the installation hole of the inner sleeve 13, and the driving device 15 is used for providing input power for the dynamic balance device.

The shape of the balancing weight 16 is a cylindrical structure, and the balancing weight 16 is arranged in the mounting hole of the eccentric block 11; the weight 16 is typically a lead alloy. According to the use condition and the counterweight requirement, the counterweight blocks made of different materials are selected or only different numbers of counterweight blocks are installed.

The online dynamic balancing device is arranged at the rotation center of a centrifuge rotor and rotates with the rotor simultaneously; monitoring the unbalance amount of the rotor at any time and adjusting the unbalance amount at any time in the running process of the centrifuge rotor; two eccentric blocks are arranged in the linear dynamic balance device, and the purpose of balancing the rotor of the centrifugal machine at any time is achieved by adjusting the deflection angle of the eccentric blocks; in addition, different numbers of on-line dynamic balancing devices can be matched according to different structures of the rotor.

Preferably, the online dynamic balance device is made into a hollow structure, so that feeding is not influenced; the online dynamic balancing device is integrated with the centrifuge rotor, and the unbalance amount is adjusted at any time in the operation process of the centrifuge rotor; the centrifuge rotor is initially installed and kept to run under better dynamic balance, and the service life is prolonged.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.